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<div class="subTitle">org.apache.commons.math3.stat.regression</div>
<h2 title="Interface UpdatingMultipleLinearRegression" class="title">Interface UpdatingMultipleLinearRegression</h2>
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<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../../../../org/apache/commons/math3/stat/regression/MillerUpdatingRegression.html" title="class in org.apache.commons.math3.stat.regression">MillerUpdatingRegression</a>, <a href="../../../../../../org/apache/commons/math3/stat/regression/SimpleRegression.html" title="class in org.apache.commons.math3.stat.regression">SimpleRegression</a></dd>
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<pre>public interface <span class="strong">UpdatingMultipleLinearRegression</span></pre>
<div class="block">An interface for regression models allowing for dynamic updating of the data.
 That is, the entire data set need not be loaded into memory. As observations
 become available, they can be added to the regression  model and an updated
 estimate regression statistics can be calculated.</div>
<dl><dt><span class="strong">Since:</span></dt>
  <dd>3.0</dd></dl>
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<h3>Method Summary</h3>
<table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation">
<caption><span>Methods</span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/regression/UpdatingMultipleLinearRegression.html#addObservation(double[],%20double)">addObservation</a></strong>(double[]&nbsp;x,
              double&nbsp;y)</code>
<div class="block">Adds one observation to the regression model.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/regression/UpdatingMultipleLinearRegression.html#addObservations(double[][],%20double[])">addObservations</a></strong>(double[][]&nbsp;x,
               double[]&nbsp;y)</code>
<div class="block">Adds a series of observations to the regression model.</div>
</td>
</tr>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/regression/UpdatingMultipleLinearRegression.html#clear()">clear</a></strong>()</code>
<div class="block">Clears internal buffers and resets the regression model.</div>
</td>
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<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/regression/UpdatingMultipleLinearRegression.html#getN()">getN</a></strong>()</code>
<div class="block">Returns the number of observations added to the regression model.</div>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/regression/UpdatingMultipleLinearRegression.html#hasIntercept()">hasIntercept</a></strong>()</code>
<div class="block">Returns true if a constant has been included false otherwise.</div>
</td>
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<td class="colFirst"><code><a href="../../../../../../org/apache/commons/math3/stat/regression/RegressionResults.html" title="class in org.apache.commons.math3.stat.regression">RegressionResults</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/regression/UpdatingMultipleLinearRegression.html#regress()">regress</a></strong>()</code>
<div class="block">Performs a regression on data present in buffers and outputs a RegressionResults object</div>
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<td class="colFirst"><code><a href="../../../../../../org/apache/commons/math3/stat/regression/RegressionResults.html" title="class in org.apache.commons.math3.stat.regression">RegressionResults</a></code></td>
<td class="colLast"><code><strong><a href="../../../../../../org/apache/commons/math3/stat/regression/UpdatingMultipleLinearRegression.html#regress(int[])">regress</a></strong>(int[]&nbsp;variablesToInclude)</code>
<div class="block">Performs a regression on data present in buffers including only regressors
 indexed in variablesToInclude and outputs a RegressionResults object</div>
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<h4>hasIntercept</h4>
<pre>boolean&nbsp;hasIntercept()</pre>
<div class="block">Returns true if a constant has been included false otherwise.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>true if constant exists, false otherwise</dd></dl>
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<h4>getN</h4>
<pre>long&nbsp;getN()</pre>
<div class="block">Returns the number of observations added to the regression model.</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>Number of observations</dd></dl>
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<h4>addObservation</h4>
<pre>void&nbsp;addObservation(double[]&nbsp;x,
                  double&nbsp;y)
                    throws <a href="../../../../../../org/apache/commons/math3/stat/regression/ModelSpecificationException.html" title="class in org.apache.commons.math3.stat.regression">ModelSpecificationException</a></pre>
<div class="block">Adds one observation to the regression model.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>x</code> - the independent variables which form the design matrix</dd><dd><code>y</code> - the dependent or response variable</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/stat/regression/ModelSpecificationException.html" title="class in org.apache.commons.math3.stat.regression">ModelSpecificationException</a></code> - if the length of <code>x</code> does not equal
 the number of independent variables in the model</dd></dl>
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<h4>addObservations</h4>
<pre>void&nbsp;addObservations(double[][]&nbsp;x,
                   double[]&nbsp;y)
                     throws <a href="../../../../../../org/apache/commons/math3/stat/regression/ModelSpecificationException.html" title="class in org.apache.commons.math3.stat.regression">ModelSpecificationException</a></pre>
<div class="block">Adds a series of observations to the regression model. The lengths of
 x and y must be the same and x must be rectangular.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>x</code> - a series of observations on the independent variables</dd><dd><code>y</code> - a series of observations on the dependent variable
 The length of x and y must be the same</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/stat/regression/ModelSpecificationException.html" title="class in org.apache.commons.math3.stat.regression">ModelSpecificationException</a></code> - if <code>x</code> is not rectangular, does not match
 the length of <code>y</code> or does not contain sufficient data to estimate the model</dd></dl>
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<h4>clear</h4>
<pre>void&nbsp;clear()</pre>
<div class="block">Clears internal buffers and resets the regression model. This means all
 data and derived values are initialized</div>
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<h4>regress</h4>
<pre><a href="../../../../../../org/apache/commons/math3/stat/regression/RegressionResults.html" title="class in org.apache.commons.math3.stat.regression">RegressionResults</a>&nbsp;regress()
                          throws <a href="../../../../../../org/apache/commons/math3/stat/regression/ModelSpecificationException.html" title="class in org.apache.commons.math3.stat.regression">ModelSpecificationException</a>,
                                 <a href="../../../../../../org/apache/commons/math3/exception/NoDataException.html" title="class in org.apache.commons.math3.exception">NoDataException</a></pre>
<div class="block">Performs a regression on data present in buffers and outputs a RegressionResults object</div>
<dl><dt><span class="strong">Returns:</span></dt><dd>RegressionResults acts as a container of regression output</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/stat/regression/ModelSpecificationException.html" title="class in org.apache.commons.math3.stat.regression">ModelSpecificationException</a></code> - if the model is not correctly specified</dd>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/NoDataException.html" title="class in org.apache.commons.math3.exception">NoDataException</a></code> - if there is not sufficient data in the model to
 estimate the regression parameters</dd></dl>
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<h4>regress</h4>
<pre><a href="../../../../../../org/apache/commons/math3/stat/regression/RegressionResults.html" title="class in org.apache.commons.math3.stat.regression">RegressionResults</a>&nbsp;regress(int[]&nbsp;variablesToInclude)
                          throws <a href="../../../../../../org/apache/commons/math3/stat/regression/ModelSpecificationException.html" title="class in org.apache.commons.math3.stat.regression">ModelSpecificationException</a>,
                                 <a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></pre>
<div class="block">Performs a regression on data present in buffers including only regressors
 indexed in variablesToInclude and outputs a RegressionResults object</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>variablesToInclude</code> - an array of indices of regressors to include</dd>
<dt><span class="strong">Returns:</span></dt><dd>RegressionResults acts as a container of regression output</dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code><a href="../../../../../../org/apache/commons/math3/stat/regression/ModelSpecificationException.html" title="class in org.apache.commons.math3.stat.regression">ModelSpecificationException</a></code> - if the model is not correctly specified</dd>
<dd><code><a href="../../../../../../org/apache/commons/math3/exception/MathIllegalArgumentException.html" title="class in org.apache.commons.math3.exception">MathIllegalArgumentException</a></code> - if the variablesToInclude array is null or zero length</dd></dl>
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